Table 4.

Tan δ and E′ of hybrid BC/Kevlar composites.

Sample	Tg from Tan δ (°C)	Tan δ	Storage Modulus (E′) (MPa)	Storage modulus percentage performance of composite compared to K/K/K composite (%)
K/K/K	63.73	0.271	408	-
K/BC/K	69.90	0.235	639	+56
BC/K/BC/K/BC	70.26	0.223	1120	+174
K/3BC/K	56.78	0.295	348	-17
2BC/K/2BC/K/2BC	59.49	0.344	381	-6
3BC/2K/3BC	65.97	0.298	630	+54
K/6BC/K	50.39	0.254	205	-49